Wrench



(No Model.)

J. 0. JOHNSON. WRENGH.

No. 483,222. Patented Sept. 27,1892.

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UNITED STAT S PATENT OFFICE.

. JAMES C. JOHNSON, OF CONCORD CHURCH, WEST VIRGINIA.

I WRENCH.

SPECIFICATION forming part of Letters Patent No. 483,222, datedSeptember 27, 1892.

Application filed February 18, 1892. Serial No. 421,997. (No model.)

To aZZ whom it may concern.-

Be it known that 1, JAMES C. J OHNSON, a citizen of the United States,residing at Concord Church, in the county of Mercer and State of WestVirginia, have invented a new and useful Wrench, of which the followingis a specification.

My invention relates to wrenches, the objects in View being to provide acheap and simple wrench the jaws of which may be readily adjusted andforced together to grip rods, bolts, and the like, as well as nuts,whereby the wrench is better adapted for operation as such, and also iscapable of serving as a hand-vise for bench use.

Other objects and advantages of the invention will appear in thefollowing description, and the novel features thereof will beparticularly pointed out in the claims.

Referring to the drawings, Figure 1 is a side elevation of a wrenchconstructed in accordance with my invention. Fig. 2 is a longitudinalsection of the same, the screw-0perating rod being shown extended bydotted lines. Fig. 3 is a detail in perspective of the metal plug. Fig.4c is a similar view of the feed-screw-operating rod.

Like numerals of reference indicate like parts in all the figures of thedrawings.

1 designates a metal plug, preferably elliptical in crosssection, andhaving its exterior reduced at its lower end to form a tenon 2. The plugis provided with a central opening 3, and at each side of the same witha cylindrical opening 4, the central opening having its upper endcountersunk to form a seat 5.

6 designates the upper or fixed jaw of a wrench, and the same isprovided at its middle and upon its under side with a countersunkbearing 7, and at each side thereof there depend from the jaw plaincylindrical rods 8. These rods may be made integral with the jaw orseparate therefrom, as may be desired. The movable jaw 9 is of a shapesimilar to that of the fixed jaw, is provided with a central threadedperforation 10, which aligns with the countersunk bearing 7, and atopposite sides of the same is provided with plain perforations 12,through which loosely pass the two guide-rods 8,the lower ends of therods passing through and being secured within the perforations 4 of theplug 1.

formed in the jaw 9. Immediately below the threaded portion the rod isprovided with an annular boss 13, which takes bearing in the countersunkseat 5 of the plug 1, the lower portion of the feed-rod passing throughand beyond the opening 3 in the plug. The handle 14: is longitudinallybored, being provided at its upper end with a mortise l5, fitting thereduced portion 2 of the plug, screws 16 being passed through the wallof the mortise into the plug and lower ends of the guide-rods 8. Belowthe mortise the handle has its bore reduced, and at its lower extremityis still further reduced, forming an annular shoulder 18.

19 designates a cylindrical rod the upper portion of which is providedwith a cylindrical head 20, shorter than the bore of the handle andadapted to loosely fit the same and prevented from withdrawal bycomingin contact with the before-mentioned shoulder 18 at the lower end of thehandle. The head 20 is provided with a rectangular socket 21, adapted toloosely receive the lower rectangular end 22 of the feed-rod, upon whichsaid head slides. The rod 19 below the head 20 is roughened to form asuitable grasp, and when drawn outwardly from the lower end of thehandle exposes sufficient length for a convenient hand-hold, whereby therod may be turned and the feed-rod manipulated.

This completes the construction of the Wrench, whose operation is asfollows: The rod 19, being slightly longer than the handle, projectsbeyond the inner end of the same, and may be manipulated between thethumb and forefinger of the operator, so as to adjust the jaws fordifferent sizes of nuts. Such adjustment will be readily understood inthat rotation of the rod 19 causes the feed-rod to rotate, and thus thesliding jaw is moved upon its guides S to or away from the fixed jaw. Incase it is desired to tightly grip the wrench upon the nut or to employthe wrench as a hand-vise for holding small artielessuch as nails,bolts, rivets, pins, &e.the rod 19 is drawn out, so that the head bearsagainst the shoulder 18, and thus a sufficient length of the rod 19 isexposed to accommodate the entire hand of the operator, who may thusexert his strength to clamp the jaws tightly upon the object.

From the foregoing description, in connecnection with the accompanyingdrawings, it will be seen that I have provided a wrench of greatsimplicity, strength, and durability, one in which the jaws may beadjusted with great facility and dispatch, and may be employed as anefficient hand-vise for gripping small articles and working upon thesame at the bench.

Having described my invention, what I claim is 1. In a wrench, thecombination, with the hollow handle, the guide-rods extending therefrom,the fixed jaw supported at the upper ends of the guide-rods, and themovable jaw mounted for reciprocation on said guide-rods, of afeed-screw passing through the movable jaw andjournaled in the fixed jawand handle and having its lower end extending into the latter, and anoperating-rod for the feed-screw, mounted for reciprocation and rotationwithin the handle and for reciprocation and non-rotation upon the lowerend of the feed-screw,

said rod being adapted to be drawn out beyond the handle to form ahand-grip for rotating the feed-rod, substantially as specified.

2. In a wrench, the metal plug reduced at its lower end and providedwith a central and opposite side bores, combined with the hollow handlehaving its upper end fitting the lower reduced end of the plug and itslower extremity provided with an internal shoulder, the rod fittingwithin the shoulder and provided at its upper end with an enlarged headhaving a squared socket and fitting the bore of the handle, the fixedjaw, the guide-rods extending from the same into the side openings ofthe plug, the movable jaw mounted on the guide-rods, and the feed-rodthreaded in the perforation of the movable jaw and at its lower endsquared and fitting the socket of the rod, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JAMES C. JOHNSON.

WVitnesses:

SALoME E. JoHNsoN, BETTIE M. HOLROYD.

